Quality Control in Clinical Trials
Quality Control in Clinical Trials
Quality Control in Clinical Trials
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2. Enter data twice and compare<br />
files-- unlikely to make same<br />
data entry error twice<br />
3. Take random sample and verify<br />
with data form or record<br />
D. Identification of outliers<br />
1. Widely differ<strong>in</strong>g values for one or a few<br />
<strong>in</strong>dividuals requires scrut<strong>in</strong>iz<strong>in</strong>g data to<br />
be sure no cod<strong>in</strong>g, data entry or<br />
record<strong>in</strong>g errors occurred
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